首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   295篇
  免费   9篇
  304篇
  2020年   4篇
  2017年   2篇
  2015年   2篇
  2014年   2篇
  2013年   51篇
  2012年   11篇
  2011年   7篇
  2010年   4篇
  2009年   4篇
  2007年   9篇
  2005年   6篇
  2004年   9篇
  2003年   13篇
  2002年   9篇
  2001年   2篇
  2000年   5篇
  1999年   6篇
  1998年   2篇
  1997年   6篇
  1996年   5篇
  1995年   5篇
  1994年   2篇
  1993年   3篇
  1992年   5篇
  1991年   8篇
  1990年   7篇
  1989年   2篇
  1988年   2篇
  1986年   6篇
  1985年   5篇
  1984年   2篇
  1983年   8篇
  1982年   3篇
  1980年   6篇
  1979年   8篇
  1978年   4篇
  1977年   7篇
  1976年   5篇
  1975年   5篇
  1974年   5篇
  1973年   6篇
  1972年   2篇
  1971年   4篇
  1969年   2篇
  1968年   3篇
  1967年   5篇
  1966年   2篇
  1964年   2篇
  1963年   5篇
  1961年   2篇
排序方式: 共有304条查询结果,搜索用时 15 毫秒
281.
This is Part II of our general assessment of the state of sociological research on adolescent substance use. In Part I, presented in the previous issue of this journal, we analyzed the methodological issues in the field and summarized findings on extent and trends of use. Here, we summarize structural, interactional, and attitudinal correlates of teenage drinking and drug behavior. We characterize the field as being theoretically underdeveloped and argue that the place to look for theory to organize empirical generalizations and derive testable hypotheses is among the existing sociological theories of deviance, which have been given scant attention in the adolescent drug and drinking literature. The field of study is in need of primary data collected to test hypotheses from a single general theory that is capable of integrating structural, interactional, and attitudinal variables.  相似文献   
282.
Abstract

A recent letter by Kakalios (1987) has criticized our suggestion that the microscopic mobility of hydrogenated amorphous silicon increases under high-level double injection. In this Letter, we show that Kakalios misinterpreted our model and misrepresented our data.  相似文献   
283.
284.
This study extended previous cross-cultural work regarding the tripartite model of anxiety and depression by developing Serbian translations of the Positive and Negative Affect Scale for Children (PANAS–C), the Physiological Hyperarousal Scale for Children (PH–C), and the Affect and Arousal Scale (AFARS). Characteristics of the scales were examined using 449 students (M age = 12.61 years). Applying item retention criteria established in other studies, PH–C, PANAS–C, and AFARS translations with psychometric properties similar to English-language versions were identified. Preliminary validation of the scales was conducted using a subset of 194 students (M age = 12.37 years) who also completed measures of anxiety and depression. Estimates of reliability, patterns of correlations among scales, and age and gender differences were consistent with previous studies with English-speaking samples. Findings regarding scale validity were mixed, although consistent with existing literature. Serbian translations of the PH–C, PANAS–C, and AFARS mirror the original English-language scales in terms of both strengths and weaknesses.  相似文献   
285.
The present study explored audience effects as a function of (a) age of performer and (b) role as model or performer. Five-, eight-, and 11–year-old children (N # 72 boys and girls) performed seven acquisition trials of the WISC Object Assembly item #3 (FACE) and seven trials of Object Assembly #4 (AUTO) alone or in the presence of a peer who was a confederate of the E. In the audience conditions, the performer was told in the model condition that the observer would learn by watching him perform, or in the neutral audience condition that the observer was simply waiting for the E to return. Compared to the alone condition, the neutral audience produced a negative audience effect in 11-year-olds but not in the five- and eight-year-olds. For all ages, the model group was consistently superior to the alone and neutral audience conditions. Implications for social-learning theories of development are discussed.  相似文献   
286.
The authors studied the influences of valence information on preschool children's (n = 47) moral (good or bad), liking (liked or disliked by a friend), and consequence-of-behavior (reward or punishment) judgments. The authors presented 8 scenarios describing the behavior valence, positive valence (help, share), negative valence (verbal insult, physical aggression), and disposition valence (nice or mean) of characters in social interaction with a friend. Overall, character disposition and behavior valence significantly influenced children's judgments. Moral, liking, and consequence-of-behavior judgments varied significantly by character disposition for both positive behavior scenarios. In contrast, there were fewer significant findings as a function of character disposition for negative behavior scenarios, suggesting that the negative behavior cue somewhat diminished the effect of character disposition on children's judgments. The authors discuss preschool students’ coordination of information about valence of behavior and character disposition and the students’ reluctance to judge that misbehavior warrants punitive consequence.  相似文献   
287.
Abstract

By use of the Bern Sex-Role Inventory (BSRI), students were classified in terms of their self-described sex-role personalities (e.g., masculine, feminine, or androgynous) as well as by their relative career interests in each of five distinct selling positions. Results revealed a strong desire on the part of the female students to invade male-dominated selling strongholds. But the reverse was not true. The findings are generally predictive of the broadening of the scope of interests of female graduates seeking entry positions in selling.  相似文献   
288.
289.
Language and literacy skills established during early childhood are critical for later school success. Parental engagement with children has been linked to a number of adaptive characteristics in preschoolers including language and literacy development, and family-school collaboration is an important contributor to school readiness. This study reports the results of a randomized trial of a parent engagement intervention designed to facilitate school readiness among disadvantaged preschool children, with a particular focus on language and literacy development. Participants included 217 children, 211 parents, and 29 Head Start teachers in 21 schools. Statistically significant differences in favor of the treatment group were observed between treatment and control participants in the rate of change over 2 academic years on teacher reports of children's language use (d = 1.11), reading (d = 1.25), and writing skills (d = 0.93). Significant intervention effects on children's direct measures of expressive language were identified for a subgroup of cases where there were concerns about a child's development upon entry into preschool. Additionally, other child and family moderators revealed specific variables that influenced the treatment's effects.  相似文献   
290.
For collective action to evolve and be maintained by selection, the mind must be equipped with mechanisms designed to identify free riders--individuals who do not contribute to a collective project but still benefit from it. Once identified, free riders must be either punished or excluded from future collective actions. But what criteria does the mind use to categorize someone as a free rider? An evolutionary analysis suggests that failure to contribute is not sufficient. Failure to contribute can occur by intention or accident, but the adaptive threat is posed by those who are motivated to benefit themselves at the expense of cooperators. In 6 experiments, we show that only individuals with exploitive intentions were categorized as free riders, even when holding their actual level of contribution constant (Studies 1 and 2). In contrast to an evolutionary model, rational choice and reinforcement theory suggest that different contribution levels (leading to different payoffs for their cooperative partners) should be key. When intentions were held constant, however, differences in contribution level were not used to categorize individuals as free riders, although some categorization occurred along a competence dimension (Study 3). Free rider categorization was not due to general tendencies to categorize (Study 4) or to mechanisms that track a broader class of intentional moral violations (Studies 5A and 5B). The results reveal the operation of an evolved concept with features tailored for solving the collective action problems faced by ancestral hunter-gatherers.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号